1
|
Wei Y, Qi H, Zhang C. Recent advances and challenges in developing electrochemiluminescence biosensors for health analysis. Chem Commun (Camb) 2023; 59:3507-3522. [PMID: 36820650 DOI: 10.1039/d2cc06930j] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
This Feature Article simply introduces principles and mechanisms of electrochemiluminescence (ECL) biosensors for the determination of biomarkers and highlights recent advances of ECL biosensors on key aspects including new ECL reagents and materials, new biological recognition elements, and emerging construction biointerfacial strategies with illustrative examples and a critical eye on pitfalls and discusses challenges and perspectives of ECL biosensors for health analysis.
Collapse
Affiliation(s)
- Yuxi Wei
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| | - Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, P. R. China.
| |
Collapse
|
2
|
Burton K, Nic Daeid N, Adegoke O. Surface plasmon-enhanced aptamer-based fluorescence detection of cocaine using hybrid nanostructure of cadmium-free ZnSe/In2S3 core/shell quantum dots and gold nanoparticles. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
3
|
Razlansari M, Ulucan-Karnak F, Kahrizi M, Mirinejad S, Sargazi S, Mishra S, Rahdar A, Díez-Pascual AM. Nanobiosensors for detection of opioids: A review of latest advancements. Eur J Pharm Biopharm 2022; 179:79-94. [PMID: 36067954 DOI: 10.1016/j.ejpb.2022.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 07/28/2022] [Accepted: 08/27/2022] [Indexed: 11/28/2022]
Abstract
Opioids are generally used as analgesics in pain treatment. Like many drugs, they have side effects when overdosing and causeaddiction problems.Illegal drug use and misuse are becoming a major concern for authorities worldwide; thus, it is critical to have precise procedures for detecting them in confiscated samples, biological fluids, and wastewaters. Routine blood and urine tests are insufficient for highly selective determinations and can cause cross-reactivities. For this purpose, nanomaterial-based biosensors are great tools to determine opioid intakes, continuously monitoring the drugs with high sensitivity and selectivity even at very low sample volumes.Nanobiosensors generally comprise a signal transducer nanostructure in which a biological recognition molecule is immobilized onto its surface. Lately, nanobiosensors have been extensively utilized for the molecular detection of opioids. The usage of novel nanomaterials in biosensing has impressed biosensing studies. Nanomaterials with a large surface area have been used to develop nanobiosensors with shorter reaction times and higher sensitivity than conventional biosensors. Colorimetric and fluorescence sensing methods are two kinds of optical sensor systems based on nanomaterials. Noble metal nanoparticles (NPs), such as silver and gold, are the most frequently applied nanomaterials in colorimetric techniques, owing to their unique optical feature of surface plasmon resonance. Despite the progress of an extensive spectrum of nanobiosensors over the last two decades, the future purpose of low-cost, high-throughput, multiplexed clinical diagnostic lab-on-a-chip instruments has yet to be fulfilled. In this review, a concise overview of opioids (such as tramadol and buprenorphine, oxycodone and fentanyl, methadone and morphine) is provided as well as information on their classification, mechanism of action, routine tests, and new opioid sensing technologies based on various NPs. In order to highlight the trend of nanostructure development in biosensor applications for opioids, recent literature examples with the nanomaterial type, target molecules, and limits of detection are discussed.
Collapse
Affiliation(s)
- Mahtab Razlansari
- Inorganic Chemistry Department, Faculty of Chemistry, Razi University, Kermanshah, Iran.
| | - Fulden Ulucan-Karnak
- Department of Medical Biochemistry, Institute of Health Sciences, Ege University, İzmir 35100, Turkey.
| | | | - Shekoufeh Mirinejad
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran.
| | - Saman Sargazi
- Cellular and Molecular Research Center, Research Institute of Cellular and Molecular Sciences in Infectious Diseases, Zahedan University of Medical Sciences, Zahedan 98167-43463, Iran.
| | - Sachin Mishra
- NDAC Centre, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea; RFIC Lab, Department of Electronic Engineering, Kwangwoon University, Nowon-gu, Seoul, 01897, South Korea.
| | - Abbas Rahdar
- Department of Physics, University of Zabol, Zabol, P.O. Box. 98613-35856, Iran.
| | - Ana M Díez-Pascual
- Universidad de Alcalá, Facultad de Ciencias, Departamento de Química Analítica, Química Física e Ingeniería Química, Ctra. Madrid-Barcelona, Km. 33.6, 28805 Alcalá de Henares, Madrid, Spain.
| |
Collapse
|
4
|
Moradi R, Khalili NP, Septiani NLW, Liu CH, Doustkhah E, Yamauchi Y, Rotkin SV. Nanoarchitectonics for Abused-Drug Biosensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104847. [PMID: 34882957 DOI: 10.1002/smll.202104847] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Rapid, accessible, and highly accurate biosensors for the detection of addictive and abused drugs are needed to reduce the adverse personal and societal impacts of addiction. Modern sensors that utilize next-generation technologies, e.g., nanobiotechnology and nanoarchitectonics, have triggered revolutionary progress in the field as they allow accurate detection and tracking of trace levels of major classes of drugs. This paper reviews advances in the field of biosensors for the detection of commonly abused drugs, both prescribed such as codeine and morphine, and illegal narcotics like cocaine.
Collapse
Affiliation(s)
- Rasoul Moradi
- Nanotechnology Laboratory, School of Engineering and Applied Science, Khazar University, Baku, Az1096, Azerbaijan
- Department of Chemical Engineering, School of Engineering and Applied Science, Khazar University, Baku, Az1096, Azerbaijan
| | - Nazila Pour Khalili
- Nanotechnology Laboratory, School of Engineering and Applied Science, Khazar University, Baku, Az1096, Azerbaijan
- Center for Cell Pathology Research, Department of Biological Science, Khazar University, Baku, Az1096, Azerbaijan
| | - Ni Luh Wulan Septiani
- Advanced Functional Materials Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia
| | - Chia-Hung Liu
- Department of Urology, School of Medicine, College of Medicine, and TMU Research Center of Urology and Kidney, Taipei Medical University, No. 250, Wu-Hsing Street, Taipei, 110, Taiwan
- Department of Urology, Shuang Ho Hospital, Taipei Medical University, No. 291, Zhongzheng Road, Zhonghe District, New Taipei City, 23561, Taiwan
| | - Esmail Doustkhah
- International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yusuke Yamauchi
- JST-ERATO Yamauchi Materials Space-Tectonics Project and International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
- School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Slava V Rotkin
- Department of Engineering Science and Mechanics, Materials Research Institute, The Pennsylvania State University, Millennium Science Complex, University Park, PA, 16802, USA
| |
Collapse
|
5
|
Chen W, Cui L, Song Y, Chen W, Su Y, Chang W, Xu W. Detection of Listeria monocytogenes Using Luminol-Functionalized AuNF-Labeled Aptamer Recognition and Magnetic Separation. ACS OMEGA 2021; 6:26338-26344. [PMID: 34660993 PMCID: PMC8515604 DOI: 10.1021/acsomega.1c03527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/18/2021] [Indexed: 06/13/2023]
Abstract
A capture probe was constructed using a combination of magnetic Fe3O4 nanoparticles and an aptamer directed towardListeria monocytogenes. A signal probe was prepared by combining luminol-functionalized flowerlike gold nanoparticles, obtained by combining luminol with chitosan bearing a complementary sequence of the aptamer. The complex consisting of the capture probe and signal probe could be removed through magnetic separation. Where the target was present within a sample, it competed with the complementary sequence for binding to the aptamer, causing a change of the chemiluminescent signal. The results indicated that a good linear relationship existed over the concentration range 1.0 × 101-1.0 × 105 CFU·mL-1. It was established that it was feasible to use this approach to detect L. monocytogenes at levels as low as 6 CFU·mL-1 in milk samples.
Collapse
Affiliation(s)
- Weifeng Chen
- School
of Food and Bioengineering, Henan University
of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Liwei Cui
- School
of Food and Bioengineering, Henan University
of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Yanyan Song
- School
of Food and Bioengineering, Henan University
of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Wei Chen
- School
of Food and Bioengineering, Henan University
of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Yuan Su
- Department
of Nutrition and Health, China Agricultural
University, Beijing 100083, China
| | - Weidan Chang
- School
of Food and Bioengineering, Henan University
of Animal Husbandry and Economy, Zhengzhou 450046, China
| | - Wentao Xu
- Department
of Nutrition and Health, China Agricultural
University, Beijing 100083, China
| |
Collapse
|
6
|
Koçer MB, Aydoğdu Tığ G, Pekyardımcı Ş. Selective determination of non-organophosphorus insecticide using DNA aptamer-based single-use biosensors. Biotechnol Appl Biochem 2020; 68:1174-1184. [PMID: 32969502 DOI: 10.1002/bab.2039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 09/17/2020] [Indexed: 12/18/2022]
Abstract
In the present study, we developed a disposable aptamer-based biosensor for rapid, sensitive, and reliable detection of acetamiprid (ACE). To improve the sensitivity of the aptasensor, poly-5-amino-2-mercapto-1,3,4-thiadiazole [P(AMT)] and gold nanoparticles (AuNPs) were progressively electrodeposited on the screen-printed electrode (SPE) surface by using cyclic voltammetry (CV) technique. For the determination of ACE, thiol-modified primary aptamer (Apt1) was selected by using the SELEX method and immobilized on the surface of the P(AMT) and AuNPs-modified SPE (SPE/P(AMT)/AuNPs) via AuS bonding. Then, the surface-bound aptamer was incubated with ACE for 45 Min. After that, the biotin-labeled aptamer 2 (Apt2) was interacted with the ACE, then the enzyme-labeled step was performed. In this step, alkaline phosphatase (ALP) was bound to the surface through the interaction between Apt2 labeled with biotin and streptavidin (strep)-ALP conjugate. The determination of ACE was achieved by measuring the oxidation signal of α-naphthol, which is formed on the electrode surface through the interaction of ALP with α-naphthyl phosphate. The working range of the developed aptasensor was determined as 5 × 10-12 -5 × 10-10 mol L-1 with a low limit of detection (1.5 pmol L-1 ). It was also found that the proposed aptasensor possessed great advantages such as low cost, good selectivity, and good reproducibility.
Collapse
Affiliation(s)
- Mustafa Barış Koçer
- Department of Chemistry, Faculty of Science, Selçuk University, Konya, Turkey
| | - Gözde Aydoğdu Tığ
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, Turkey
| | - Şule Pekyardımcı
- Department of Chemistry, Faculty of Science, Ankara University, Ankara, Turkey
| |
Collapse
|
7
|
Gao L, Wang H, Deng Z, Xiang W, Shi H, Xie B, Shi H. Highly sensitive detection for cocaine using an aptamer–cocaine–aptamer method. NEW J CHEM 2020. [DOI: 10.1039/c9nj05147c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, a thiol-modified aptamer was immobilized on a gold nanoparticle-modified molybdenum disulfide composite material (MoS2@AuNPs), which could remove the interference of physical adsorption and reduce false positive signals.
Collapse
Affiliation(s)
- Li Gao
- Institute of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Huixing Wang
- Institute of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Zebin Deng
- Institute of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Wenwen Xiang
- Institute of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Haifeng Shi
- Institute of Life Sciences
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Bing Xie
- Department of Obstetrics and Gynecology
- the Fourth People's Hospital of Zhenjiang
- Zhenjiang
- P. R. China
| | - Haixia Shi
- P. E. Department of Jiangsu University
- Zhenjiang 212013
- P. R. China
| |
Collapse
|
8
|
Abstract
This Feature simply introduces the history and mechanism of classical electrogenerated chemiluminescence (ECL) systems for the detection of biomolecules, highlights new advances and emerging fields of the ECL biosensing with recent illustrative examples, and presents the challenges and perspectives of ECL biosensing.
Collapse
Affiliation(s)
- Honglan Qi
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P.R. China
| | - Chengxiao Zhang
- Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710062 , P.R. China
| |
Collapse
|
9
|
Chen X, Zhou C, Guo X. Ultrasensitive Detection and Binding Mechanism of Cocaine in an Aptamer‐based Single‐molecule Device. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900225] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xinjiani Chen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Academy for Advanced Interdisciplinary Studies, Center for Life SciencesPeking University Beijing 100871 China
| | - Chenguang Zhou
- Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
| | - Xuefeng Guo
- Beijing National Laboratory for Molecular Science, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular EngineeringPeking University Beijing 100871 China
- Department of Materials Science and Engineering, College of EngineeringPeking University Beijing 100871 China
| |
Collapse
|
10
|
Celebanska A, Chiniforooshan Y, Janik M, Mikulic P, Sellamuthu B, Walsh R, Perreault J, Bock WJ. Label-free cocaine aptasensor based on a long-period fiber grating. OPTICS LETTERS 2019; 44:2482-2485. [PMID: 31090712 DOI: 10.1364/ol.44.002482] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
In this Letter, we combined a promising bioreceptor, a cocaine aptamer MN6, with an ultrasensitive optical platform long-period fiber grating (LPFG) to create a new cocaine biosensor. The cocaine induces a conformational rearrangement of the aptamer which changes the refractive index around the LPFG producing a measurable shift of the transmission spectrum. We were able to track subtle interaction between the receptor and cocaine molecules over a concentration range of 25 to 100 μM. The presented biosensor does not require labeling or signal enhancement, resulting in a simple user-friendly device.
Collapse
|
11
|
Poltorak L, Sudhölter EJ, de Puit M. Electrochemical cocaine (bio)sensing. From solid electrodes to soft junctions. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.02.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
12
|
Qiu Y, Tang Y, Li B, He M. Rapid detection of cocaine using aptamer-based biosensor on an evanescent wave fibre platform. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180821. [PMID: 30473831 PMCID: PMC6227954 DOI: 10.1098/rsos.180821] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 09/13/2018] [Indexed: 05/11/2023]
Abstract
The rapid detection of cocaine has received considerable attention because of the instantaneous and adverse effects of cocaine overdose on human health. Aptamer-based biosensors for cocaine detection have been well established for research and application. However, reducing the analytic duration without deteriorating the sensitivity still remains as a challenge. Here, we proposed an aptamer-based evanescent wave fibre (EWF) biosensor to rapidly detect cocaine in a wide working range. At first, the aptamers were conjugated to complementary DNA with fluorescence tag and such conjugants were then immobilized on magnetic beads. After cocaine was introduced to compete against the aptamer-DNA conjugants, the released DNA in supernatant was detected on the EWF platform. The dynamic curves of EWF signals could be interpreted by the first-order kinetics and saturation model. The semi-log calibration curve covered a working range of 10-5000 µM of cocaine, and the limit of detection was approximately 10.5 µM. The duration of the full procedure was 990 s (16.5 min), and the detection interval was 390 s (6.5 min). The specified detection of cocaine was confirmed from four typical pharmaceutic agents. The analysis was repeated for 50 cycles without significant loss of sensitivity. Therefore, the aptamer-based EWF biosensor is a feasible solution to rapidly detect cocaine.
Collapse
Affiliation(s)
- Yong Qiu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, People's Republic of China
| | - Yunfei Tang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, People's Republic of China
- Ecological Environmental Protection Investments Company, China Communications Construction Corporation, Beijing 100013, People's Republic of China
| | - Bing Li
- School of Energy and Environmental Engineering, University of Beijing Science and Technology, Beijing 100083, People's Republic of China
| | - Miao He
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, People's Republic of China
| |
Collapse
|
13
|
Zholudov YT, Xu G. Electrogenerated chemiluminescence at a 9,10-diphenylanthracene/polyvinyl butyral film modified electrode with a tetraphenylborate coreactant. Analyst 2018; 143:3425-3432. [PMID: 29915838 DOI: 10.1039/c8an00889b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new, efficient electrochemiluminescent (ECL) system based on a 9,10-diphenylanthracene/polyvinyl butyral film modified glassy carbon electrode and a tetraphenylborate anion coreactant is described. The system demonstrates strong dependence of its response on the potential scan rate. In pulsed excitation mode, the system allows for tetraphenylborate detection at a level down to 5 nM with a broad range of linear responses. The anodic cyclic voltammetry response of the system shows 2 distinct ECL waves. It was found that the first of them is due to the reaction of an oxidized fluorophore with tetraphenylborate while the second one is due to the oxidation of tetraphenylborate only. The presented results demonstrate the high potential of the tetraphenylborate coreactant for exciting pulsed ECL in fluorescent species/labels immobilized on the electrode surface, which has application potential for a number of existing ECL assay systems. Due to the ability of tetraphenylborate ions to interact with a number of cations and inorganic oxidants, the developed ECL system can also be applied for quantification based on ECL quenching that was demonstrated on the examples of hydrogen peroxide and hypochlorite.
Collapse
Affiliation(s)
- Yuriy T Zholudov
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China. and Laboratory of Analytical Optochemotronics, Kharkiv National University of Radio Electronics, 14 Nauki Ave., Kharkiv 61166, Ukraine
| | - Guobao Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, China.
| |
Collapse
|
14
|
Microwave-assisted in situ synthesis of fluorescent gold nanoclusters with BSA/montmorillonite and application on latent fingermark imaging. Sci China Chem 2018. [DOI: 10.1007/s11426-017-9216-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
15
|
Fabrication of a novel aptasensor based on three-dimensional reduced graphene oxide/polyaniline/gold nanoparticle composite as a novel platform for high sensitive and specific cocaine detection. Anal Chim Acta 2017; 996:10-19. [DOI: 10.1016/j.aca.2017.10.035] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 10/26/2017] [Indexed: 12/11/2022]
|
16
|
Neves MAD, Shoara AA, Reinstein O, Abbasi Borhani O, Martin TR, Johnson PE. Optimizing Stem Length To Improve Ligand Selectivity in a Structure-Switching Cocaine-Binding Aptamer. ACS Sens 2017; 2:1539-1545. [PMID: 28929744 DOI: 10.1021/acssensors.7b00619] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Understanding how aptamer structure and function are related is crucial in the design and development of aptamer-based biosensors. We have analyzed a series of cocaine-binding aptamers with different lengths of their stem 1 in order to understand the role that this stem plays in the ligand-induced structure-switching binding mechanism utilized in many of the sensor applications of this aptamer. In the cocaine-binding aptamer, the length of stem 1 controls whether the structure-switching binding mechanism for this aptamer occurs or not. We varied the length of stem 1 from being one to seven base pairs long and found that the structural transition from unfolded to folded in the unbound aptamer is when the aptamer elongates from 3 to 4 base pairs in stem 1. We then used this knowledge to achieve new binding selectivity of this aptamer for quinine over cocaine by using an aptamer with a stem 1 two base pairs long. This selectivity is achieved by means of the greater affinity quinine has for the aptamer compared with cocaine. Quinine provides enough free energy to both fold and bind the 2-base pair-long aptamer while cocaine does not. This tuning of binding selectivity of an aptamer by reducing its stability is likely a general mechanism that could be used to tune aptamer specificity for tighter binding ligands.
Collapse
Affiliation(s)
- Miguel A. D. Neves
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Aron A. Shoara
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Oren Reinstein
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Okty Abbasi Borhani
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Taylor R. Martin
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| | - Philip E. Johnson
- Department of Chemistry and
Centre for Research on Biomolecular Interactions, York University, Toronto, Ontario M3J 1P3, Canada
| |
Collapse
|
17
|
Development of a thermal-stable structure-switching cocaine-binding aptamer. Biochimie 2017; 145:137-144. [PMID: 28838608 DOI: 10.1016/j.biochi.2017.08.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 08/18/2017] [Indexed: 12/17/2022]
Abstract
We have developed a new cocaine-binding aptamer variant that has a significantly higher melt temperature when bound to a ligand than the currently used sequence. Retained in this new construct is the ligand-induced structure-switching binding mechanism that is important in biosensing applications of the cocaine-binding aptamer. Isothermal titration calorimetry methods show that the binding affinity of this new sequence is slightly tighter than the existing cocaine-binding aptamer. The improved thermal performance, a Tm increase of 4 °C for the cocaine-bound aptamer and 9 °C for the quinine-bound aptamer, was achieved by optimizing the DNA sequence in stem 2 of the aptamer to have the highest stability based on the nearest neighbor thermodynamic parameters and confirmed by UV and fluorescence spectroscopy. The sequences in stem 1 and stem 3 were unchanged in order to retain the structure switching and ligand binding functions. The more favorable thermal stability characteristics of the OR3 aptamer should make it a useful construct for sensing applications employing the cocaine-binding aptamer system.
Collapse
|
18
|
Malekzad H, Zangabad PS, Mirshekari H, Karimi M, Hamblin MR. Noble metal nanoparticles in biosensors: recent studies and applications. NANOTECHNOLOGY REVIEWS 2017; 6:301-329. [PMID: 29335674 PMCID: PMC5766271 DOI: 10.1515/ntrev-2016-0014] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The aim of this review is to cover advances in noble metal nanoparticle (MNP)-based biosensors and to outline the principles and main functions of MNPs in different classes of biosensors according to the transduction methods employed. The important biorecognition elements are enzymes, antibodies, aptamers, DNA sequences, and whole cells. The main readouts are electrochemical (amperometric and voltametric), optical (surface plasmon resonance, colorimetric, chemiluminescence, photoelectrochemical, etc.) and piezoelectric. MNPs have received attention for applications in biosensing due to their fascinating properties. These properties include a large surface area that enhances biorecognizers and receptor immobilization, good ability for reaction catalysis and electron transfer, and good biocompatibility. MNPs can be used alone and in combination with other classes of nanostructures. MNP-based sensors can lead to significant signal amplification, higher sensitivity, and great improvements in the detection and quantification of biomolecules and different ions. Some recent examples of biomolecular sensors using MNPs are given, and the effects of structure, shape, and other physical properties of noble MNPs and nanohybrids in biosensor performance are discussed.
Collapse
Affiliation(s)
- Hedieh Malekzad
- Faculty of Chemistry, Kharazmi University, South Mofatteh Ave, P.O. Box 15719-14911, Tehran, Iran; and Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Parham Sahandi Zangabad
- Research Center for Pharmaceutical Nanotechnology (RCPN), Tabriz University of Medical Science (TUOMS), Tabriz, Iran; Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran; and Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, 14588 Tehran, Iran
| | - Hamed Mirshekari
- Advanced Nanobiotechnology and Nanomedicine Research Group (ANNRG), Iran University of Medical Sciences, Tehran, Iran
| | - Mahdi Karimi
- Department of Medical Nanotechnology, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Hemmat Exp. Way, P.O. Box 14665-354, Tehran, Iran
| | - Michael R Hamblin
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA; Department of Dermatology, Harvard Medical School, Boston, MA 02115, USA; and Division of Health Sciences and Technology, Harvard-MIT, Cambridge, MA 02139, USA
| |
Collapse
|
19
|
Sachan A, Ilgu M, Kempema A, Kraus GA, Nilsen-Hamilton M. Specificity and Ligand Affinities of the Cocaine Aptamer: Impact of Structural Features and Physiological NaCl. Anal Chem 2016; 88:7715-23. [PMID: 27348073 DOI: 10.1021/acs.analchem.6b01633] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The cocaine aptamer has been seen as a good candidate for development as a probe for cocaine in many contexts. Here, we demonstrate that the aptamer binds cocaine, norcocaine, and cocaethylene with similar affinities and aminoglycosides with similar or higher affinities in a mutually exclusive manner with cocaine. Analysis of its affinities for a series of cocaine derivatives shows that the aptamer specificity is the consequence of its interaction with all faces of the cocaine molecule. Circular dichroism spectroscopy and 2-aminopurine (2AP) fluorescence studies show no evidence of large structural rearrangement of the cocaine aptamer upon ligand binding, which is contrary to the general view of this aptamer. The aptamer's affinity for cocaine and neomycin-B decreases with the inclusion of physiological NaCl. The substitution of 2AP for A in position 6 (2AP6) of the aptamer sequence eliminated the effect of NaCl on its affinities for cocaine and analogues, but not for neomycin-B, showing a selective effect of 2AP substitution on cocaine binding. The affinity for cocaine also decreased with increasing concentrations of serum or urine, with the 2AP6 substitution blunting the effect of urine. Its low affinities for cocaine and metabolites and its ability to bind irrelevant compounds limit the opportunities for application of this aptamer in its current form as a selective and reliable sensor for cocaine. However, these studies also show that a small structural adjustment to the aptamer (2AP exchanged for adenine) can increase its specificity for cocaine in physiological NaCl relative to an off-target ligand.
Collapse
Affiliation(s)
- Ashish Sachan
- Interdepartmental Toxicology Program, ‡Department of Chemistry, §Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University , Ames, Iowa 50011, United States
| | - Muslum Ilgu
- Interdepartmental Toxicology Program, ‡Department of Chemistry, §Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University , Ames, Iowa 50011, United States
| | - Aaron Kempema
- Interdepartmental Toxicology Program, ‡Department of Chemistry, §Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University , Ames, Iowa 50011, United States
| | - George A Kraus
- Interdepartmental Toxicology Program, ‡Department of Chemistry, §Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University , Ames, Iowa 50011, United States
| | - Marit Nilsen-Hamilton
- Interdepartmental Toxicology Program, ‡Department of Chemistry, §Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University , Ames, Iowa 50011, United States
| |
Collapse
|
20
|
Tang Y, Long F, Gu C, Wang C, Han S, He M. Reusable split-aptamer-based biosensor for rapid detection of cocaine in serum by using an all-fiber evanescent wave optical biosensing platform. Anal Chim Acta 2016; 933:182-8. [PMID: 27497011 DOI: 10.1016/j.aca.2016.05.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2016] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 01/28/2023]
Abstract
A rapid, facile, and sensitive assay of cocaine in biological fluids is important to prevent illegal abuse of drugs. A two-step structure-switching aptasensor has been developed for cocaine detection based on evanescent wave optical biosensing platform. In the proposed biosensing platform, two tailored aptamer probes were used to construct the molecular structure switching. In the existence of cocaine, two fragments of cocaine aptamer formed a three-way junction quickly, and the fluorophore group of one fragment was effectively quenched by the quencher group of the other one. The tail of the three-way junction hybridized with the cDNA sequences immobilized on the optical fiber biosensor. Fluorescence was excited by evanescent wave, and the fluorescence signal was proportional to cocaine concentration. Cocaine was detected in 450 s (300 s for incubation and 150 s for detection and regeneration) with a limit of detection (LOD) of 165.2 nM. The proposed aptasensor was evaluated in human serum samples, and it exhibited good recovery, precision, and accuracy without complicated sample pretreatments.
Collapse
Affiliation(s)
- Yunfei Tang
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Feng Long
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Chunmei Gu
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Cheng Wang
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Shitong Han
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China
| | - Miao He
- State Key Joint Laboratory of ESPC, School of Environment, Tsinghua University, Beijing 100084, China.
| |
Collapse
|
21
|
Roushani M, Shahdost-fard F. Fabrication of an electrochemical nanoaptasensor based on AuNPs for ultrasensitive determination of cocaine in serum sample. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 61:599-607. [DOI: 10.1016/j.msec.2016.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 12/14/2015] [Accepted: 01/03/2016] [Indexed: 12/20/2022]
|
22
|
Bozokalfa G, Akbulut H, Demir B, Guler E, Gumus ZP, Odaci Demirkol D, Aldemir E, Yamada S, Endo T, Coskunol H, Timur S, Yagci Y. Polypeptide Functional Surface for the Aptamer Immobilization: Electrochemical Cocaine Biosensing. Anal Chem 2016; 88:4161-7. [PMID: 26928030 DOI: 10.1021/acs.analchem.6b00760] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Electroanalytical technologies as a beneficial subject of modern analytical chemistry can play an important role for abused drug analysis which is crucial for both legal and social respects. This article reports a novel aptamer-based biosensing procedure for cocaine analysis by combining the advantages of aptamers as selective recognition elements with the well-known advantages of biosensor systems such as the possibility of miniaturization and automation, easy fabrication and modification, low cost, and sensitivity. In order to construct the aptasensor platform, first, polythiophene bearing polyalanine homopeptide side chains (PT-Pala) was electrochemically coated onto the surface of an electrode and then cocaine aptamer was attached to the polymer via covalent conjugation chemistry. The stepwise modification of the surface was confirmed by electrochemical characterization. The designed biosensing system was applied for the detection of cocaine and its metabolite, benzoylecgonine (BE), which exhibited a linear correlation in the range from 2.5 up to 10 nM and 0.5 up to 50 μM for cocaine and BE, respectively. In order to expand its practical application, the proposed method was successfully tested for the analysis of synthetic biological fluids.
Collapse
Affiliation(s)
| | - Huseyin Akbulut
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University , 34469 Istanbul, Turkey
| | | | | | | | | | | | - Shuhei Yamada
- Molecular Engineering Institute, Kinki University , 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan
| | - Takeshi Endo
- Molecular Engineering Institute, Kinki University , 11-6 Kayanomori, Iizuka, Fukuoka 820-8555, Japan
| | | | | | - Yusuf Yagci
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University , 34469 Istanbul, Turkey
| |
Collapse
|
23
|
Neves MAD, Blaszykowski C, Thompson M. Utilizing a Key Aptamer Structure-Switching Mechanism for the Ultrahigh Frequency Detection of Cocaine. Anal Chem 2016; 88:3098-106. [PMID: 26871312 DOI: 10.1021/acs.analchem.5b04010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Aptasensing of small molecules remains a challenge as detection often requires the use of labels or signal amplification methodologies, resulting in both difficult-to-prepare sensor platforms and multistep, complex assays. Furthermore, many aptasensors rely on the binding mechanism or structural changes associated with target capture by the aptameric probe, resulting in a detection scheme customized to each aptamer. It is in this context that we report herein a sensitive cocaine aptasensor that offers both real-time and label-free measurement capabilities. Detection relies on the electromagnetic piezoelectric acoustic sensor (EMPAS) platform. The sensing interface consists of a S-(11-trichlorosilyl-undecanyl)benzenethiosulfonate (BTS) adlayer-coated quartz disc onto which a structure-switching cocaine aptamer (MN6) is immobilized, completing the preparation of the MN6 cocaine aptasensor (M6CA). The EMPAS system has recently been employed as the foundation of a cocaine aptasensor based on a structurally rigid cocaine aptamer variant (MN4), an aptasensor referred to by analogy as M4CA. M6CA represents a significant increase in terms of analytical performance, compared to not only M4CA but also other cocaine aptamer-based sensors that do not rely on signal amplification, producing an apparent K(d) of 27 ± 6 μM and a 0.3 μM detection limit. Remarkably, the latter is in the range of that achieved by cocaine aptasensors relying on signal amplification. Furthermore, M6CA proved to be capable not only of regaining its cocaine-binding ability via simple buffer flow over the sensing interface (i.e., without the necessity to implement an additional regeneration step, such as in the case of M4CA), but also of detecting cocaine in a multicomponent matrix possessing potentially assay-interfering species. Finally, through observation of the distinct shape of its response profiles to cocaine injection, demonstration was made that the EMPAS system in practice offers the possibility to distinguish between the binding mechanisms of structure-switching (MN6) vs rigid (MN4) aptameric probes, an ability that could allow the EMPAS to provide a more universal aptasensing platform than what is ordinarily observed in the literature.
Collapse
Affiliation(s)
- Miguel A D Neves
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | | | - Michael Thompson
- Department of Chemistry, University of Toronto , 80 St. George Street, Toronto, Ontario, Canada M5S 3H6.,Econous Systems, Inc. , 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| |
Collapse
|
24
|
Chen M, Gan N, Zhang H, Yan Z, Li T, Chen Y, Xu Q, Jiang Q. Electrochemical simultaneous assay of chloramphenicol and PCB72 using magnetic and aptamer-modified quantum dot-encoded dendritic nanotracers for signal amplification. Mikrochim Acta 2016. [DOI: 10.1007/s00604-015-1695-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
25
|
Gandhi S, Suman P, Kumar A, Sharma P, Capalash N, Suri CR. Recent advances in immunosensor for narcotic drug detection. BIOIMPACTS : BI 2015; 5:207-13. [PMID: 26929925 PMCID: PMC4769791 DOI: 10.15171/bi.2015.30] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 12/19/2015] [Accepted: 12/26/2015] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Immunosensor for illicit drugs have gained immense interest and have found several applications for drug abuse monitoring. This technology has offered a low cost detection of narcotics; thereby, providing a confirmatory platform to compliment the existing analytical methods. METHODS In this minireview, we define the basic concept of transducer for immunosensor development that utilizes antibodies and low molecular mass hapten (opiate) molecules. RESULTS This article emphasizes on recent advances in immunoanalytical techniques for monitoring of opiate drugs. Our results demonstrate that high quality antibodies can be used for immunosensor development against target analyte with greater sensitivity, specificity and precision than other available analytical methods. CONCLUSION In this review we highlight the fundamentals of different transducer technologies and its applications for immunosensor development currently being developed in our laboratory using rapid screening via immunochromatographic kit, label free optical detection via enzyme, fluorescence, gold nanoparticles and carbon nanotubes based immunosensing for sensitive and specific monitoring of opiates.
Collapse
Affiliation(s)
- Sonu Gandhi
- Amity Institute of Biotechnology, Amity University, Noida, India
| | - Pankaj Suman
- Amity Institute of Biotechnology, Amity University, Noida, India
| | - Ashok Kumar
- CSIR- Institute of Genomics and Integrative Biology, Delhi, India
| | - Prince Sharma
- Department of Microbiology and Biotechnology, Panjab University, Chandigarh, India
| | - Neena Capalash
- Department of Microbiology and Biotechnology, Panjab University, Chandigarh, India
| | - C. Raman Suri
- CSIR- Institute of Microbial Technology, Chandigarh, India
| |
Collapse
|
26
|
Ma DL, Wang M, He B, Yang C, Wang W, Leung CH. A Luminescent Cocaine Detection Platform Using a Split G-Quadruplex-Selective Iridium(III) Complex and a Three-Way DNA Junction Architecture. ACS APPLIED MATERIALS & INTERFACES 2015; 7:19060-19067. [PMID: 26284502 DOI: 10.1021/acsami.5b05861] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this study, a series of 10 in-house cyclometalated iridium(III) complexes bearing different auxiliary ligands were tested for their selectivity toward split G-quadruplex in order to construct a label-free switch-on cocaine detection platform employing a three-way junction architecture and a G-quadruplex motif as a signal output unit. Through two rounds of screening, we discovered that the iridium(III) complex 7 exhibited excellent selectivity toward the intermolecular G-quadruplex motif. A detection limit as low as 30 nM for cocaine can be achieved by this sensing approach with a linear relationship between luminescence intensity and cocaine concentration established from 30 to 300 nM. Furthermore, this sensing approach could detect cocaine in diluted oral fluid. We hope that our simple, signal-on, label-free oligonucleotide-based sensing method for cocaine using a three-way DNA junction architecture could act as a useful platform in bioanalytical research.
Collapse
Affiliation(s)
- Dik-Lung Ma
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
- Partner State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University , Hong Kong, China
| | - Modi Wang
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Bingyong He
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Chao Yang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
| | - Wanhe Wang
- Department of Chemistry, Hong Kong Baptist University , Hong Kong, China
| | - Chung-Hang Leung
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau , Macao, China
| |
Collapse
|
27
|
Multiple signal amplification electrogenerated chemiluminescence biosensors for sensitive protein kinase activity analysis and inhibition. Biosens Bioelectron 2015; 68:771-776. [DOI: 10.1016/j.bios.2015.02.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 02/02/2015] [Accepted: 02/03/2015] [Indexed: 11/24/2022]
|
28
|
Neves MAD, Blaszykowski C, Bokhari S, Thompson M. Ultra-high frequency piezoelectric aptasensor for the label-free detection of cocaine. Biosens Bioelectron 2015; 72:383-92. [PMID: 26022784 DOI: 10.1016/j.bios.2015.05.038] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Revised: 04/30/2015] [Accepted: 05/16/2015] [Indexed: 11/26/2022]
Abstract
This paper describes a label-free and real-time piezoelectric aptasensor for the detection of cocaine. The acoustic wave sensing platform is a quartz substrate functionalized with an adlayer of S-(11-trichlorosilyl-undecanyl)-benzenethiosulfonate (BTS) cross-linker onto which the anti-cocaine MN4 DNA aptamer is next immobilized. Preparation of the sensor surface was monitored using X-ray photoelectron spectroscopy (XPS), while the binding of cocaine to surface-attached MN4 was evaluated using the electromagnetic piezoelectric acoustic sensor (EMPAS). The MN4 aptamer, unlike other cocaine aptamer variants, has its secondary structure preformed in the unbound state with only tertiary structure changes occurring during target binding. It is postulated that the highly sensitive EMPAS detected the binding of cocaine through target mass loading coupled to aptamer tertiary structure folding. The sensor achieved an apparent Kd of 45 ± 12 µM, and a limit of detection of 0.9 µM. Repeated regenerability of the sensor platform was also demonstrated. This work constitutes the first application of EMPAS technology in the field of aptasensors. Furthermore, it is so far one of the very few examples of a bulk acoustic wave aptasensor that is able to directly detect the binding interaction between an aptamer and a small molecule in a facile one-step protocol without the use of a complex assay or signal amplification step.
Collapse
Affiliation(s)
- Miguel A D Neves
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | | | - Sumra Bokhari
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario, Canada M5S 3G9
| | - Michael Thompson
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6; Econous Systems Inc., 80 St. George Street, Toronto, Ontario, Canada M5S 3H6; Institute for Biomaterials and Biomedical Engineering, University of Toronto, 164 College Street, Toronto, Ontario, Canada M5S 3G9.
| |
Collapse
|
29
|
Ultrasensitive and Signal-on Electrochemiluminescence Aptasensor Using the Multi-tris(bipyridine)ruthenium(II)-β-cyclodextrin Complexes. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201400511] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
30
|
Roushani M, Shahdost-Fard F. A highly selective and sensitive cocaine aptasensor based on covalent attachment of the aptamer-functionalized AuNPs onto nanocomposite as the support platform. Anal Chim Acta 2014; 853:214-221. [PMID: 25467461 DOI: 10.1016/j.aca.2014.09.031] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Revised: 09/11/2014] [Accepted: 09/19/2014] [Indexed: 12/12/2022]
Abstract
Based on the conformational changes of the aptamer-functionalized gold nanoparticles (AuNPs) onto MWCNTs/IL/Chit nanocomposite as the support platform, we have developed a sensitive and selective electrochemical aptasensor for the detection of cocaine. The 5'-amine-3'-AuNP terminated aptamer is covalently attached to a MWCNTs/IL/Chit nanocomposite. The interaction of cocaine with the aptamer functionalized AuNP caused the aptamer to be folded and the AuNPs with negative charge at the end of the aptamer came to the near of electrode surface therefore, the electron transfer between ferricyanide (K3Fe(CN)6) as redox probe and electrode surface was inhibited. A decreased current of (K3Fe(CN)6) was monitored by differential pulse voltammetry technique. In an optimized condition the calibration curve for cocaine concentration was linear up to 11 μM with detection limit (signal-to-noise ratio of 3) of 100 pM. To test the selectivity of the prepared aptasensor sensing platform applicability, some analgesic drugs as the interferes were examined. The potential of the aptasensor was successfully applied for measuring cocaine concentration in human blood serum. Based on our experiments it can be said that the present method is absolutely beneficial in developing other electrochemical aptasensor.
Collapse
|
31
|
Electrogenerated chemiluminescence aptasensor for ultrasensitive detection of thrombin incorporating an auxiliary probe. Talanta 2014; 130:370-6. [PMID: 25159423 DOI: 10.1016/j.talanta.2014.07.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 07/03/2014] [Accepted: 07/10/2014] [Indexed: 01/23/2023]
Abstract
A novel electrogenerated chemiluminescence (ECL) aptasensor for ultrasensitive detection of thrombin incorporating an auxiliary probe was designed by employing specific anti-thrombin aptamer as a capture probe and a ruthenium(II) complex-tagged reporter probe as an ECL probe and an auxiliary probe to assist the ECL probe close to the surface of the electrode. The ECL aptasensor was fabricated by self-assembling a thiolated capture probe on the surface of gold electrode and then hybridizing the ECL probe with the capture probe, and further self-assembling the auxiliary probe. When analyte thrombin was bound with the capture probe, the part of the dehybridized ECL probe was hybridized with the neighboring auxiliary probe, led to the tagged ruthenium(II) complex close to the electrode surface, resulted in great increase in the ECL intensity. The results showed that the increased ECL intensity was directly related to the logarithm of thrombin concentrations in the range from 5.0 × 10(-15)M to 5.0 × 10(-12)M with a detection limit of 2.0 × 10(-15)M. This work demonstrates that employing an auxiliary probe which exists nearby the capture probe can enhance the sensitivity of the ECL aptasensor. This promising strategy will be extended to the design of other biosensors for detection of other proteins and genes.
Collapse
|
32
|
Tang X, Zhao D, Zhang M. Sensitive and reusable electrochemiluminescent aptasensor achieved with diblock oligonucleotides immobilized solely through preferential adenine-Au interaction. Analyst 2014; 138:5706-12. [PMID: 23923126 DOI: 10.1039/c3an00924f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strong Au-S chemistry to self-assemble thiolated oligonucleotides at gold electrode is an efficient strategy to construct electrochemiluminescent (ECL) aptasensor. However, it remains challenging to precisely control the orientation and conformation of surface-tethered oligonucleotides and to reuse ECL aptasensor because of the narrow electrochemical window of thiolated DNA film on Au surface (below ~0.80 V versus Ag/AgCl). Here, we demonstrate adenine/thymine diblock oligonucleotides (d(Am-Tn)) to substitute DNA-SH in DNA immobilization for constructing ECL aptasensor. As a proof-of-principle, thrombin was used to present the properties of the proposed sensor. The as-formed ECL aptasensor had a wide electrochemical window and good stability (decreased 5.38% after 200 cyclic potential cycles, 0-1.2 V versus Ag/AgCl). Moreover, the aptasensor exhibited an extremely low detection limit (0.017 pM) and offered good selectivity toward thrombin. This detection limit was at least one order of magnitude lower than those of previous methods for thrombin. Additionally, the ECL aptasensor was reusable (n = 3) and showed good reproducibility (relative standard derivation, 4.7% (n = 6)). We believe that the strategy demonstrated here provides a good platform for DNA immobilization in constructing ECL even electrochemical aptasensor for the detection of targets in clinical analysis conveniently.
Collapse
Affiliation(s)
- Xiaofeng Tang
- Department of Chemistry, Renmin University of China, Beijing 100872, P. R. China.
| | | | | |
Collapse
|
33
|
Lu L, Qian Y, Wang L, Ma K, Zhang Y. Metal-enhanced fluorescence-based core-shell Ag@SiO₂ nanoflares for affinity biosensing via target-induced structure switching of aptamer. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1944-50. [PMID: 24480015 DOI: 10.1021/am4049942] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
One of the great challenges in metal-enhanced fluorescence (MEF) technology is the achievement of distance modulation with nanometer accuracy between the fluorophore and metal surface to obtain maximum enhancement. We propose an MEF-based core-shell Ag@SiO2 nanoflare for distance control via the thickness of silica shell with cooperation of DNA hybridization. The nanoflare contains a 50 nm spherical silver nanoparticle (Ag NP) core, a 8 nm silica shell, and cyanine (Cy5)-labeled aptamer hybridized with a complementary DNA (cDNA) immobilized onto the shell surface. The formation of the Cy5-labeled aptamer/cDNA duplex on the Ag@SiO2 NP surface results in the confinement of Cy5 to the shell surface and an increase in the fluorescence of Cy5 with a 32-fold enhancement factor in bulk solution (signal-on). In the presence of affinity-binding targets, the Cy5-labeled aptamers confined onto the Ag@SiO2 NP surface dissociate from their cDNA into the solution because of structure switching. The target-induced release of aptamer leads to a reduction in the enhanced fluorescence signal of the labeled Cy5 moiety (signal-off). Thus, the nanoflare can be used as a sensor for target recognition. Using adenosine-5'-triphosphate (ATP) aptamer, detection of ATP has a linear response from 0 to 0.5 mM and a detection limit of 8 μM. With various types of DNA probes immobilized onto the core-shell Ag@SiO2 NPs, the MEF-based nanoflare has provided an effective platform for the detection and quantification of a broad range of analytes, such as mRNA regulation and detection, cell sorting, and gene profiling.
Collapse
Affiliation(s)
- Lu Lu
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education and ‡Key Laboratory of Analytical Chemistry for Life Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, China
| | | | | | | | | |
Collapse
|
34
|
Shi HW, Wu MS, Du Y, Xu JJ, Chen HY. Electrochemiluminescence aptasensor based on bipolar electrode for detection of adenosine in cancer cells. Biosens Bioelectron 2013; 55:459-63. [PMID: 24441543 DOI: 10.1016/j.bios.2013.12.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 12/20/2013] [Accepted: 12/20/2013] [Indexed: 10/25/2022]
Abstract
Here we report a novel approach for the detection of adenosine in cancer cells by electrochemiluminescence (ECL) on a wireless indium tin oxide bipolar electrode (BPE). In this approach, ferrocene (Fc) which is labeled on adenosine aptamer is enriched on one pole of the BPE by hybridization with its complementary DNA (ssDNA) and oxidized to Fc(+) under an external voltage of 5.0V at the two ends of BPE. Then, a reversed external voltage was added on the BPE, making Fc(+) enriched pole as cathode. The presence of Fc(+) promotes the oxidation reaction on the anodic pole of the BPE, resulting in a significant increase of ECL intensity using Ru(bpy)3(2+)/tripropylamine (TPA) system as test solution. The presence of target adenosine was reflected by the ECL signal decrease on the anodic pole caused by the target-induced removal of ferrocene-aptamer on the cathodic pole. The decrease of ECL signal was logarithmically linear with the concentration of ATP in a wide range from 1.0 fM to 0.10 μM. This ECL biosensing system could accurately detect the level of adenosine released from cancer cells.
Collapse
Affiliation(s)
- Hai-Wei Shi
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Mei-Sheng Wu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Ying Du
- Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology, Harbin 150080, China
| | - Jing-Juan Xu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.
| | - Hong-Yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| |
Collapse
|
35
|
Yang X, Wang A, Liu J. A facile label-free electrochemiluminescence biosensor for target protein specific recognition based on the controlled-release delivery system. Talanta 2013; 114:5-10. [PMID: 23953433 DOI: 10.1016/j.talanta.2013.03.077] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Revised: 03/17/2013] [Accepted: 03/28/2013] [Indexed: 01/19/2023]
Abstract
This paper described a novel label-free electrochemiluminescence assay for target protein based on a controlled delivery system. Iron oxide magnetic mesoporous silica nanocontainers were prepared by using a general procedure. The prepared magnetic mesoporous silica nanocontainers were applied to load the guest molecules [Ru(bpy)3](2+). Aptamers were used as gatekeepers on the pore outlets of the nanocontainers. In the presence of target proteins, the specific aptamer-protein interactions were employed as triggers for uncapping the pores and releasing the guest molecules from the nanocontainers. The amount of the guest molecule [Ru(bpy)3](2+) released from the magnetic mesoporous silica nanocontainers was monitored by the electrochemiluminescence assay. The results show that the releasing amount of [Ru(bpy)3](2+) is proportional to the thrombin concentration in the range of 0.6 pM-0.8 nM with a detection limit of 0.5 pM (S/N=3). The present work demonstrates that the fabricated nanocontainer using aptamer as the cap is a highly sensitive and selective key-in lock gating system for the label-free ECL biosensor.
Collapse
Affiliation(s)
- Xiaoyan Yang
- Shandong Provincial Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong, PR China.
| | | | | |
Collapse
|
36
|
Supersandwich-type electrochemiluminescenct aptasensor based on Ru(phen)3(2+) functionalized hollow gold nanoparticles as signal-amplifying tags. Biosens Bioelectron 2013; 47:524-9. [PMID: 23643946 DOI: 10.1016/j.bios.2013.03.075] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 03/23/2013] [Accepted: 03/25/2013] [Indexed: 11/21/2022]
Abstract
An electrochemiluminescent (ECL) aptasensor was fabricated and used for the amplified detection of thrombin (TB) based on DNA supersandwich structure. Herein, hollow gold nanospheres (HGNPs) were firstly employed as effective tag-carriers for the immobilization of detection aptamer (TBA 2) to form the HGNPs labeled TBA 2 (HGNPs-TBA 2). Subsequently, streptavidin (SA) was used to block the non-specific binding sites of HGNPs-TBA 2 as well as to supply binding sites, which could further introduce numerous initiator DNA strands (bio-S1) via biotin-streptavidin specific interaction. Next, bio-S1 could in situ trigger hybridization chain reaction (HCR) to create a long nicked double helices analogous (dsDNA) in the present of ssDNA S2 and ssDNA S3 (S3 is partially complementary to the S2) to obtain the DNA supersandwich structure. Furthermore, Ru(phen)3(2+), a well-known ECL luminophore, could be intercalated into the grooves of dsDNA (Ru-dsDNA) to form the Ru-dsDNA-SA-HGNPs-TBA 2 bioconjugate. As a result, the target of TB was sandwiched between Ru-dsDNA-SA-HGNPs-TBA 2 and TBA 1. In this strategy, numerous Ru(phen)3(2+) could be immobilized on the electrode based on the supersandwich structure, resulting in an increased ECL signal output. A supersandwich ECL assay for TB detection was developed with excellent sensitivity of a large concentration variation from 5fM to 50pM and a detection limit of 1.6fM.
Collapse
|
37
|
Jin G, Lu L, Gao X, Li MJ, Qiu B, Lin Z, Yang H, Chen G. Magnetic graphene oxide-based electrochemiluminescent aptasensor for thrombin. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2012.10.155] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
38
|
Zhang M, Yuan R, Chai Y, Wang C, Wu X. Cerium oxide-graphene as the matrix for cholesterol sensor. Anal Biochem 2013; 436:69-74. [PMID: 23380308 DOI: 10.1016/j.ab.2013.01.022] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2012] [Revised: 01/15/2013] [Accepted: 01/22/2013] [Indexed: 11/19/2022]
Abstract
A simple and sensitive electrogenerated chemiluminescence (ECL) cholesterol biosensor was prepared based on cerium oxide-graphene (CeO(2)-graphene) composites as an efficient matrix. CeO(2)-graphene composites were prepared by depositing CeO(2) onto graphene and were characterized by scanning electron microscopy. The experimental results demonstrated that CeO(2)-graphene could catalyze the ECL of a luminol-H(2)O(2) (hydrogen peroxide) system to amplify the luminol ECL signal greatly. In addition, the use of CeO(2)-graphene provided a better biocompatible microenvironment for the immobilized enzyme, resulting in excellent stability and a long lifetime of the ECL biosensor. The surface assembly process, ECL behaviors, and electrochemistry of the biosensor were investigated in detail. The quantity of cholesterol was in the linear range from 12 μM to 7.2 mM with a detection limit of 4.0 μM (signal/noise = 3). In addition, the biosensor exhibited outstanding reproducibility, long-term stability, and selectivity. Moreover, this cholesterol biosensor offers an alternative analytical method with low cost and high speed.
Collapse
Affiliation(s)
- Meihe Zhang
- Education Ministry Key Laboratory on Luminescence and Real-Time Analysis, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | | | | | | | | |
Collapse
|
39
|
Research on DNA Electrochemiluminescence Biosensing. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1016/s1872-2040(13)60618-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
40
|
Dong Y, Pei L, Chu X, Zhang W, Zhang Q. Electrogenerated chemiluminescence of bismuth sulfide nanorods modified electrode in alkaline aqueous solution. Analyst 2013; 138:2386-91. [DOI: 10.1039/c3an36241h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Reagent-less electrogenerated chemiluminescence peptide-based biosensor for the determination of prostate-specific antigen. Talanta 2012; 100:162-7. [DOI: 10.1016/j.talanta.2012.08.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2012] [Revised: 08/23/2012] [Accepted: 08/27/2012] [Indexed: 11/24/2022]
|
42
|
Niu S, Lou X, Jiang Y, Lin J. A Novel Fluorescence Sensor for Cocaine with Signal Amplification through Cycling Exo-Cleaving with a Hairpin Probe. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.677972] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
43
|
Wang H, Gong W, Tan Z, Yin X, Wang L. Label-free bifunctional electrochemiluminescence aptasensor for detection of adenosine and lysozyme. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.05.056] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
44
|
Simultaneous detection of cell-secreted TNF-α and IFN-γ using micropatterned aptamer-modified electrodes. Biomaterials 2012; 33:7347-55. [PMID: 22809645 DOI: 10.1016/j.biomaterials.2012.06.089] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Accepted: 06/28/2012] [Indexed: 12/12/2022]
Abstract
Cellular production of such cytokines as interferon (IFN)-γ and tumor necrosis factor (TNF)-α is used to determine disease-specific immune responses and may be used to diagnose infectious diseases such as tuberculosis. In this paper, we describe the development of micropatterned electrodes functionalized with electroactive aptamers for multiplexed detection of immune-cell-produced cytokines. A sequence of electrode deprotection and aptamer incubation steps were used to assemble anti-IFN-γ DNA aptamers and anti-TNF-α RNA aptamers on individually addressable half-ring electrodes. Aptamer molecules were thiolated for assembly on gold and were functionalized with methylene blue redox reporter for electrochemical signal transduction. Specificity of individual sensors to the correct cytokine species was confirmed by exposure to recombinant cytokines. For cell detection experiments, electrode arrays were integrated into microfluidic devices and incubated with immune cells. Design of the surface was such that a small group of ~400 cells attached in the circular adhesion sites surrounded by half-ring electrodes sensing IFN-γ and TNF-α. The microdevice consisted of two parallel microfluidic channels, each channel containing four cell capture/sensing sites. Upon mitogenic activation, secreted IFN-γ and TNF-α molecules were monitored by performing square wave voltammetry (SWV) at different time points at individually addressable electrodes. This biosensing platform was used to analyze the quantity and rate of cytokine release from primary T cells and a monocyte cell line. Upon further development of this platform may be enhanced to enable detection of larger number of cytokines and used to correlate the levels and dynamics of cytokine release in immune cells to diagnosis and treatment of infectious diseases.
Collapse
|
45
|
Zhu D, Zhou X, Xing D. Ultrasensitive aptamer-based bio bar code immunomagnetic separation and electrochemiluminescence method for the detection of protein. Anal Chim Acta 2012; 725:39-43. [PMID: 22502609 DOI: 10.1016/j.aca.2012.03.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2012] [Revised: 02/28/2012] [Accepted: 03/05/2012] [Indexed: 12/01/2022]
Abstract
An ultrasensitive aptamer-based bio bar code immunomagnetic separation and electrochemiluminescence (IM-ECL) method for the detection of protein is developed. The target protein is captured by biotin-labeled aptamer (biotin probe) and [Ru(bpy)(3)](2+) (TBR)-Au bio bar code-labeled aptamer (ECL nanoprobe), to form a double aptamer-protein sandwich complex. The complex is then immobilized on the streptavidin microbeads through biotin-streptavidin linkage and detected by ECL assay. The ECL signal of the target protein is amplified by the TBR-bio bar code DNAs. As an example, platelet-derived growth factor B-chain homodimer (PDGF-BB) was detected by the method. Experimental results show that the detection limit of the assay is 1 pM of PDGF-BB. A calibration curve with a linearity range from 1 pM to 10 nM is established, thus, make quantitative analysis possible. The method has been used to detect PDGF-BB in fetal calf serum with minimum background interference. Due to the wide availability of aptamer for numerous proteins, this aptamer-based bio bar code IM-ECL method holds great promise in protein detection.
Collapse
Affiliation(s)
- Debin Zhu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, China
| | | | | |
Collapse
|
46
|
|
47
|
Zhang DW, Zhang FT, Cui YR, Deng QP, Krause S, Zhou YL, Zhang XX. A label-free aptasensor for the sensitive and specific detection of cocaine using supramolecular aptamer fragments/target complex by electrochemical impedance spectroscopy. Talanta 2012; 92:65-71. [PMID: 22385809 DOI: 10.1016/j.talanta.2012.01.049] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/21/2012] [Accepted: 01/29/2012] [Indexed: 10/14/2022]
Abstract
A simple and label-free aptasensor for sensitive and specific detection of cocaine was developed by measuring the change in electrochemical impedance spectra (EIS), based on the formation of a supramolecular aptamer fragments/substrate complex. An anticocaine aptamer was divided into two fragments, Cx and Cy. Three different sensing interfaces, called Au/Cx5S/MCE, Au/Cy3S/MCE and Au/Cy5S/MCE, were fabricated by immobilizing Cx or Cy on a gold electrode through modifying their 5' or 3' end with a thiolated group followed by the treatment with mercaptoethanol (MCE). The formation of the corresponding supramolecular aptamer fragments/cocaine complex was investigated via monitoring electrochemical impedance spectra in the presence of [Fe(CN)(6)](3-/4-). The interfacial electron transfer resistance (R(et)) was found to depend strongly on the cocaine concentration. Since the supramolecular aptamer fragments/cocaine complex was formed on the electrode surface, the sensing interface strongly affected the sensitivity of the aptasensor. Au/Cx5S/MCE was shown to have good sensitivity within a cocaine detection range of 0.1-20 μM. Moreover, MCE was shown to improve the sensitivity of the aptasensor greatly. Even without the help of amplification or labeling, cocaine concentrations as low as 100 nM could be easily detected by the impedimetric aptasensor developed. The specificity and regeneration of the cocaine aptasensor were also investigated and satisfactory results were obtained. The developed aptasensor was successfully applied to detect the cocaine in biological fluids.
Collapse
Affiliation(s)
- De-Wen Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Biochemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing 100871, China
| | | | | | | | | | | | | |
Collapse
|
48
|
Aptamer sensor for cocaine using minor groove binder based energy transfer. Anal Chim Acta 2012; 719:76-81. [PMID: 22340534 DOI: 10.1016/j.aca.2012.01.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2011] [Revised: 12/30/2011] [Accepted: 01/03/2012] [Indexed: 11/22/2022]
Abstract
We report on an optical aptamer sensor for cocaine detection. The cocaine sensitive fluorescein isothiocyanate (FITC)-labeled aptamer underwent a conformational change from a partial single-stranded DNA with a short hairpin to a double-stranded T-junction in the presence of the target. The DNA minor groove binder Hoechst 33342 selectively bound to the double-stranded T-junction, bringing the dye within the Förster radius of FITC, and therefore initiating minor groove binder based energy transfer (MBET), and reporting on the presence of cocaine. The sensor showed a detection limit of 0.2 μM. The sensor was also implemented on a carboxy-functionalized polydimethylsiloxane (PDMS) surface by covalently immobilizing DNA aptamers. The ability of surface-bound cocaine detection is crucial for the development of microfluidic sensors.
Collapse
|
49
|
Strehlitz B, Reinemann C, Linkorn S, Stoltenburg R. Aptamers for pharmaceuticals and their application in environmental analytics. ACTA ACUST UNITED AC 2011; 4:1-30. [PMID: 22389661 PMCID: PMC3281204 DOI: 10.1007/s12566-011-0026-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 11/10/2011] [Indexed: 01/07/2023]
Abstract
Aptamers are single-stranded DNA or RNA oligonucleotides, which are able to bind with high affinity and specificity to their target. This property is used for a multitude of applications, for instance as molecular recognition elements in biosensors and other assays. Biosensor application of aptamers offers the possibility for fast and easy detection of environmental relevant substances. Pharmaceutical residues, deriving from human or animal medical treatment, are found in surface, ground, and drinking water. At least the whole range of frequently administered drugs can be detected in noticeable concentrations. Biosensors and assays based on aptamers as specific recognition elements are very convenient for this application because aptamer development is possible for toxic targets. Commonly used biological receptors for biosensors like enzymes or antibodies are mostly unavailable for the detection of pharmaceuticals. This review describes the research activities of aptamer and sensor developments for pharmaceutical detection, with focus on environmental applications.
Collapse
Affiliation(s)
- Beate Strehlitz
- UFZ-Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
| | | | | | | |
Collapse
|
50
|
Hua M, Li P, Li L, Huang L, Zhao X, Feng Y, Yang Y. Quantum dots as immobilized substrate for electrochemical detection of cocaine based on conformational switching of aptamer. J Electroanal Chem (Lausanne) 2011. [DOI: 10.1016/j.jelechem.2011.08.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|